A prism structure and method of assembling the same

Abstract

The application discloses a prism structure and an assembling method thereof, and the prism structure comprises a prism frame, a ridge prism, a half-ridge prism, a floating partition plate and a fixing screw, the ridge prism and the half-ridge prism are arranged on the prism frame, the prism frame comprises a base and two side plates, the end of the side plate is arranged on the end face of the base, the floating partition plate is arranged between the two side plates, the side plate is provided with a through hole, the fixing screw is arranged in the side of the floating partition plate after penetrating through the through hole of the side plate, the floating partition plate can rotate between the two side plates with the fixing screw as the axis, and the ridge prism and the half-ridge prism are arranged between the two side plates and are located on the two sides of the floating partition plate respectively. The prism structure of the application solves the problem of poor optical parameters caused by the machining error of parts or the assembling error of the prism in the prior art by the floating partition plate which can rotate between the two side plates at will, and reduces the machining precision requirement of the parts and the assembling difficulty.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of prism, in particular to a prism structure and an assembling method thereof. BACKGROUND

[0002] In most short optical systems, two prisms (such as roof prism and half roof prism) are usually required to be assembled for the purpose of normal imaging and shortening the optical path. In such optical systems, the prism assembling requires very high accuracy, and the prisms must be assembled to the specified position and angle, otherwise the imaging quality and position will be greatly affected. Therefore, the precision of the parts is required to be very high, and the assembling of the prisms is also required to be strict.

[0003] Most prisms are processed by optical grinding and polishing process, so the error of the prism parts can be controlled within a very small error range. However, due to the influence of tool wear, clamping error and machine precision, the size of the parts cannot be guaranteed, so high-precision processing equipment and customized clamps are usually required to process the metal frame, resulting in high cost of the parts. The existing metal frame for fixing the prisms is usually made into an integrated structure. However, since the partition plate in the metal frame needs to be attached to the mirror surface of the two prisms, for example, the partition plate needs to have a 48° angle with the end surface of the metal frame, the metal frame cannot be processed at one time and needs to be repeatedly clamped and processed, which inevitably causes size processing error and reduces the processing efficiency of the metal frame, thereby affecting the assembling efficiency of the prisms and the metal frame. SUMMARY

[0004] The present application provides a prism structure and an assembling method thereof to solve at least one of the above technical problems.

[0005] According to one aspect of the present application, a prism structure is provided, which comprises a prism frame, a roof prism and a half roof prism, the roof prism and the half roof prism are arranged on the prism frame, and further comprises a floating partition plate and a fixing screw. The prism frame comprises a base and two parallel arranged side plates, the end of the side plate is arranged on the end surface of the base, the first light hole is arranged on the base, the floating partition plate is arranged between the two side plates, the second light hole is arranged on the floating partition plate, the through hole is arranged on the side plate, and the fixing screw is arranged in the side of the floating partition plate after penetrating through the through hole of the side plate. The floating partition plate can rotate between the two side plates with the fixing screw as the axis. The roof prism and the half roof prism are arranged between the two side plates and located on the two sides of the floating partition plate respectively. The first side surface of the roof prism is attached to the base, the second side surface of the roof prism is attached to the floating partition plate, the third side surface of the half roof prism is attached to the prism frame, and the fourth side surface of the half roof prism is attached to the floating partition plate.

[0006] The prism structure of this invention enables the optical system to achieve image projection and shorten the optical path by allowing light to pass through a first aperture on the prism frame, a roof prism, a second aperture on the floating partition, and a half-roof prism. When assembling the prism structure, the floating partition is installed between two side plates using fixing screws. The floating partition can rotate freely between the two side plates around the fixing screws. First, the roof prism is assembled by installing it between the two side plates and pushing it so that its first side surface adheres to the base, and its second side surface adheres to one side of the floating partition. The roof prism is then in place. Next, the half-roof prism is assembled by installing it between the two side plates and pushing it so that its third side surface adheres to the prism frame. The fourth side surface of the half-roof prism... The half-roof prism is assembled by attaching it to the other side of the floating partition. During assembly, since the floating partition can rotate freely between the two side plates, the ridge prism only needs to be pushed into place first, and then the floating partition will automatically return to its fitted position with the ridge prism, thus avoiding assembly errors. The prism structure of this invention separates the floating partition and the prism frame into two independent components and processes them separately, simplifying the processing and clamping problem. By using a floating partition that can rotate freely between the two side plates, the problem of poor optical parameters caused by part processing errors or prism assembly errors is solved. This reduces the processing accuracy requirements and assembly difficulty of the parts, thereby improving the processing efficiency of the prism frame and the assembly efficiency of the prism and prism frame.

[0007] Preferably, there are two fixing screws, and both side plates are provided with coaxial through holes. The two fixing screws pass through the through holes on the two side plates and are screwed into the side of the floating partition.

[0008] Therefore, after the floating partition is installed between the two side plates by two fixing screws, the floating partition can rotate smoothly and freely between the two side plates with the two fixing screws as the axis. During assembly, it is only necessary to push the ridge prism into place first, and the floating partition will automatically return to the state of fitting with the ridge prism, avoiding assembly errors. When processing the prism frame and the floating partition, after the prism frame and the floating partition are formed by milling and turning, the two threaded holes on the floating partition that are adapted to the two fixing screws can be directly processed. It is only necessary to ensure that the two threaded holes are coaxial, so as to avoid the error caused by the secondary clamping hole misalignment, which would lead to the positioning offset of the floating partition.

[0009] Preferably, the axis of the fixing screw intersects the axis of the first optical hole.

[0010] Therefore, when the prism frame and the floating partition are processed, the prism frame and the floating partition are formed by turning, and then the threaded holes on the floating partition which are matched with the fixing screws are directly processed, thereby avoiding the error caused by the deviation of the hole clamping twice, the deviation of the positioning of the floating partition, and the deviation of the installation of the ridge prism and the half-ridge prism. As long as the axis of the threaded holes on the floating partition which are matched with the fixing screws intersects with the axis of the first light hole on the base when the floating partition is installed between the two side plates by the fixing screws, the ridge prism and the half-ridge prism can be installed in place, thereby solving the problem of the poor optical parameters caused by the processing error of the parts or the assembly error of the prism, and reducing the processing precision requirement of the parts and the assembly difficulty.

[0011] Preferably, a limiting groove is arranged on the end face of the base close to the floating partition, and an inclined surface is arranged on one end of the floating partition, and the end of the floating partition provided with the inclined surface is accommodated in the limiting groove, and the floating partition is arranged in an inclined manner between the two side plates.

[0012] Therefore, the limiting groove can limit the rotation range of the floating partition, the installation of the ridge prism is facilitated, the inclined surface on the floating partition can prevent the end of the floating partition from being stuck in the limiting groove during the rotation of the floating partition, so that the end of the floating partition can swing freely in the limiting groove, and the floating partition arranged in an inclined manner ensures that the ridge prism and the half-ridge prism form the required light path after being installed.

[0013] Preferably, two positioning threaded holes are arranged on the side plate,

[0014] When the bolt is screwed in one of the positioning threaded holes, the end of the bolt can pre-fix the ridge prism, and when the bolt is screwed in the other positioning threaded hole, the end of the bolt can pre-fix the half-ridge prism.

[0015] Therefore, when the ridge prism and the half-ridge prism need to be fixed, one bolt is screwed in one of the positioning threaded holes, the bolt is screwed with a certain tightening force, the end of the bolt abuts against the ridge prism to pre-fix the ridge prism, and the other bolt is screwed in the other positioning threaded hole, the bolt is screwed with a certain tightening force, and the end of the bolt abuts against the half-ridge prism to pre-fix the half-ridge prism.

[0016] Preferably, a plurality of glue injection holes are arranged on the side plate,

[0017] When the glue is injected into at least one of the glue injection holes, the ridge prism can be bonded with the side plate, and when the glue is injected into at least one of the glue injection holes, the half-ridge prism can be bonded with the side plate.

[0018] Therefore, when fixing the ridge prism and the half-ridge prism, one bolt is screwed into one positioning threaded hole, the bolt is screwed with a certain tightening force, the end of the bolt is pressed against the ridge prism to pre-fix the ridge prism, another bolt is screwed into another positioning threaded hole, the bolt is screwed with a certain tightening force, the end of the bolt is pressed against the half-ridge prism to pre-fix the half-ridge prism, then glue is injected into the glue injection hole, the glue can bond the ridge prism and the side plate together, the glue can bond the half-ridge prism and the side plate together, after the glue between the ridge prism and the side plate and the glue between the half-ridge prism and the side plate solidify, the bolts in the positioning threaded holes are removed, and the fixing of the ridge prism and the half-ridge prism is very simple.

[0019] The application further provides an assembling method of the prism structure.

[0020] (a). After the fixing screw is screwed into the side part of the floating partition plate through the through hole on the side plate, the floating partition plate is installed between the two side plates, and the floating partition plate can rotate between the two side plates;

[0021] (b). The ridge prism is installed between the two side plates, the ridge prism is pushed so that the first side surface of the ridge prism is attached to the base and the second side surface of the ridge prism is attached to one side of the floating partition plate, and the ridge prism is assembled in place;

[0022] (c). The half-ridge prism is installed between the two side plates, the half-ridge prism is pushed so that the third side surface of the half-ridge prism is attached to the prism frame and the fourth side surface of the half-ridge prism is attached to the other side of the floating partition plate, and the half-ridge prism is assembled in place;

[0023] (d). The ridge prism and the half-ridge prism are fixed;

[0024] (e). The ridge prism is bonded with the side plate, and the half-ridge prism is bonded with the side plate.

[0025] The assembling method of the prism structure can solve the problem of poor optical parameters caused by machining errors of parts or prism assembly errors, reduce the machining precision requirement and assembly difficulty of the parts, and improve the machining efficiency of the prism frame and the assembling efficiency of the prism and the prism frame.

[0026] The application further provides an assembling method of the prism structure.

[0027] (a). A fixing screw is screwed through the through hole on the side plate and placed in the side of the floating partition plate, the floating partition plate is installed between the two side plates, and the floating partition plate can rotate between the two side plates;

[0028] (b). The roof prism is installed between the two side plates, the roof prism is pushed to make the first side of the roof prism fit on the base, the second side of the roof prism fit on one side of the floating partition plate, and the roof prism is assembled in place;

[0029] (c). The half-roof prism is installed between the two side plates, the half-roof prism is pushed to make the third side of the half-roof prism fit on the prism frame, the fourth side of the half-roof prism fit on the other side of the floating partition plate, and the half-roof prism is assembled in place;

[0030] (d). A screw is screwed in a positioning threaded hole, and when the screw is screwed, the end of the screw presses against the roof prism to pre-fix the roof prism,

[0031] and another screw is screwed in another positioning threaded hole, and when the screw is screwed, the end of the screw presses against the half-roof prism to pre-fix the half-roof prism;

[0032] (e). Glue is injected into the glue injection hole, and the roof prism and the side plate are bonded together, and the half-roof prism and the side plate are bonded together;

[0033] (f). After the glue between the roof prism and the side plate and the glue between the half-roof prism and the side plate solidifies, the screw in the positioning threaded hole is removed.

[0034] The assembling method of the prism structure of the present application, in the assembling process, since the floating partition plate can rotate between the two side plates with the fixing screw as the shaft, only the roof prism needs to be pushed to the position during assembly, and the floating partition plate will automatically return to the fitting state with the roof prism, thereby avoiding assembly errors, the assembling method of the present application solves the problem of poor optical parameters caused by traditional part processing errors or prism assembly errors through a floating partition plate that can rotate between the two side plates, reduces the processing precision requirement and assembly difficulty of the parts, and thereby improves the processing efficiency of the prism frame and the assembling efficiency of the prism and the prism frame.

[0035] Preferably, in step (a), the number of fixing screws is two, the two side plates are each provided with a through hole with the same axis, and the two fixing screws are screwed through the through holes on the two side plates and placed in the sides of the floating partition plate, and the floating partition plate can rotate between the two side plates with the fixing screws as the shaft.

[0036] Therefore, after the floating partition is installed between the two side plates by two fixing screws, the floating partition can rotate smoothly and freely between the two side plates with the two fixing screws as the axis. During assembly, it is only necessary to push the ridge prism into place first, and the floating partition will automatically return to the state of fitting with the ridge prism, avoiding assembly errors. When processing the prism frame and the floating partition, after the prism frame and the floating partition are formed by milling and turning, the two threaded holes on the floating partition that are adapted to the two fixing screws can be directly processed. It is only necessary to ensure that the two threaded holes are coaxial, so as to avoid the error caused by the secondary clamping hole misalignment, which would lead to the positioning offset of the floating partition. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of a prism structure according to the present invention;

[0038] Figure 2 for Figure 1 The diagram shows the disassembled structure of the prism.

[0039] Figure 3 for Figure 1 A schematic diagram of the split structure of the prism structure from another perspective;

[0040] Figure 4 for Figure 1 A schematic diagram of the prism structure from another perspective;

[0041] Figure 5 for Figure 4 The diagram shows a cross-sectional view of the prism structure along the AA direction.

[0042] Figure 6 for Figure 1 A schematic diagram of the prism structure from another perspective;

[0043] Figure 7 for Figure 6 The diagram shows a cross-sectional view of the prism structure along the BB direction.

[0044] Figure 8 for Figure 1 The diagram shows the structure of the prism structure after concealing the ridge prism, half-roof prism, and fixing screws.

[0045] Figure 9 for Figure 1 A schematic diagram of the prism frame in the prism structure shown;

[0046] Figure 10 for Figure 1 The diagram shows the assembly of the prism structure.

[0047] Figure 11A flow chart of an assembling method of a prism structure according to an embodiment of the present application;

[0048] Figure 12 A flow chart of an assembling method of a prism structure according to another embodiment of the present application. DETAILED DESCRIPTION

[0049] The technical solutions in the embodiments of the present application will be apparently and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, but not all the embodiments of the present application.

[0050] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application. In addition, the terms "first", "second" and the like are only for the purpose of description and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more; it should be noted that, unless otherwise specified and limited, the terms "mounting", "connecting", "connecting", "arranging" should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the communication inside two elements.

[0051] Referring to Figures 1 to 9 , a prism structure includes a prism frame 1, a ridge prism 2, a half-ridge prism 3, a floating partition plate 4 and a fixing screw 5.

[0052] Referring to Figures 1 to 9 , the prism frame 1 includes a base 11 and two side plates 12, the ends of the two side plates 12 are arranged on the end face of the base 11, the side plates 12 are integrally formed with the base 11, the two side plates 12 are arranged in parallel, and the base 11 is formed with a first light hole 111 for light to pass through.

[0053] The prism frame 1 can further include a circular end plate 13, referring to Figure 9 , the free end of the side plate 12 is formed with a receiving groove 124, referring to Figure 4 and Figure 5The two side plates 12 are fixed with the circular end plate 13 in the two accommodating grooves 124, the top of the circular end plate 13 is accommodated in the accommodating groove 124 on the upper side plate 12, the bottom of the circular end plate 13 is accommodated in the accommodating groove 124 on the lower side plate 12, and the middle of the circular end plate 13 is suspended for limiting the half-roof prism 3. The circular end plate 13 of the prism frame 1 is only used as a positioning tool when the ridge prism 2 and the half-roof prism 3 are assembled, and needs to be removed after the assembly of the ridge prism 2 and the half-roof prism 3 is completed.

[0054] Referring to Figure 2 , Figure 3 , Figure 8 and Figure 9 , the through hole 121 is formed on each side plate 12, the two through holes 121 on the two side plates 12 are coaxially arranged, the through hole 121 is used for installing the floating baffle 4, the axis b of the through hole 121 intersects the axis a of the first light hole 111 (as shown in Figure 3 and Figure 9 ), so that the floating baffle 4 and the end surface of the half-roof prism 3 have a 48° angle after the floating baffle 4 and the ridge prism 2 and the half-roof prism 3 are installed in place (α=48° in Figure 5 ), thereby meeting the requirements of the positive image and the shortening of the optical path of the optical system.

[0055] Referring to Figures 2 to 8 , the floating baffle 4 is installed between the two side plates 12, and the floating baffle 4 can be arbitrarily rotated between the two side plates 12.

[0056] Referring to Figure 2 and Figure 3 , the upper end surface and the lower end surface of the floating baffle 4 are formed with the threaded hole 43, the two threaded holes 43 are coaxially arranged, and the fixed screw 5 is screwed into the threaded hole 43 on the side of the floating baffle 4 after passing through the through hole 121 on the side plate 12. In the embodiment, the number of fixed screws 5 is two, the two fixed screws 5 are screwed into the two threaded holes 43 on the floating baffle 4 after passing through the two through holes 121 on the two side plates 12 (as shown in Figure 7 ), the axis b of the two fixed screws 5 intersects the axis a of the first light hole 111 on the base 11, so that the floating baffle 4 and the end surface of the half-roof prism 3 have a 48° angle after the floating baffle 4 and the ridge prism 2 and the half-roof prism 3 are installed in place (α=48° in Figure 5The floating partition plate 4 can be freely rotated between the two side plates 12 with the fixed screw 5 as the axis, so as to meet the requirements of positive image and shortening of the optical path of the optical system. Figure 5 The floating partition plate 4 can be freely rotated between the two side plates 12 with the fixed screw 5 as the axis.

[0057] Referring to Figure 2 , Figure 3 and Figure 9 , the end face of the base 11 close to the floating partition plate 4 is formed with a limiting groove 112, one end of the floating partition plate 4 is formed with an inclined surface 42, when the floating partition plate 4 is installed between the two side plates 12, the end of the floating partition plate 4 formed with the inclined surface 42 is accommodated in the limiting groove 112, and the floating partition plate 4 is arranged in an inclined manner between the two side plates 12 (as shown in Figure 8 ), the limiting groove 112 can limit the rotation range of the floating partition plate 4, facilitating the installation of the ridge prism 2, the existence of the inclined surface 42 on the floating partition plate 4 can prevent the end of the floating partition plate 4 from being stuck in the limiting groove 112 during rotation, the inclined surface 42 on the floating partition plate 4 can enable the end of the floating partition plate 4 to swing freely in the limiting groove 112, and in addition, the inclined arrangement of the floating partition plate 4 ensures that the required optical path is formed after the ridge prism 2 and the half-ridge prism 3 are installed.

[0058] The structure of the ridge prism 2 and the half-ridge prism 3 is as shown in Figures 2 to 7 , the ridge prism 2 and the half-ridge prism 3 are installed on the prism frame 1, specifically, referring to Figures 1 to 7 , the ridge prism 2 and the half-ridge prism 3 are both installed between the two side plates 12, the ridge prism 2 and the half-ridge prism 3 are located on the two sides of the floating partition plate 4, the first side face 21 of the ridge prism 2 is attached to the base 11 (as shown in Figure 5 ), the second side face 22 of the ridge prism 2 is attached to the floating partition plate 4 (as shown in Figure 5 ), the third side face 31 of the half-ridge prism 3 is attached to the circular end plate 13 on the prism frame 1, and the fourth side face 32 of the half-ridge prism 3 is attached to the floating partition plate 4.

[0059] Referring to Figure 2 andFigure 3 The second light hole 41 is formed on the floating partition plate 4. The light passes through the first light hole 111 on the base 11 of the prism frame 1, the roof prism 2, the second light hole 41 on the floating partition plate 4, and the half-roof prism 3 to realize the function of normal image and shortening of the optical path.

[0060] Referring to Figures 1 to 3 , Figures 6 to 9 Two positioning threaded holes 122 are formed on the side plate 12. When the roof prism 2 and the half-roof prism 3 are installed in place, a bolt is screwed into one of the positioning threaded holes 122 to pre-fix the roof prism 2, and another bolt is screwed into the other positioning threaded hole 122 to pre-fix the half-roof prism 3. The tightening force is adjusted according to the condition that the end of the bolt does not damage the roof prism 2 and the half-roof prism 3. Only the end of the bolt needs to slightly press against the roof prism 2 and the half-roof prism 3 to pre-fix them.

[0061] In this embodiment, two positioning threaded holes 122 are formed on each of the two side plates 12. When the roof prism 2 is fixed, a bolt can be screwed into each of the two positioning threaded holes 122 on the two side plates 12 to pre-fix the two sides of the roof prism 2 to ensure the stability of the fixing. When the half-roof prism 3 is fixed, a bolt can be screwed into each of the two positioning threaded holes 122 on the two side plates 12 to pre-fix the two sides of the half-roof prism 3 to ensure the stability of the fixing. When the roof prism 2 is fixed, a bolt can also be screwed into one of the positioning threaded holes 122 on one side plate 12 to pre-fix the roof prism 2. When the half-roof prism 3 is fixed, a bolt can also be screwed into one of the positioning threaded holes 122 on one side plate 12 to pre-fix the half-roof prism 3.

[0062] Referring to Figures 1 to 3 , Figure 6 , Figure 8 and Figure 9 A plurality of glue injection holes 123 are formed on the side plate 12. In this embodiment, the number of glue injection holes 123 on the side plate 12 is three. One of the glue injection holes 123 corresponds to the roof prism 2, and two of the glue injection holes 123 correspond to the half-roof prism 3. When the roof prism 2 is fixed, glue is injected into one of the glue injection holes 123 to fill the gap between the roof prism 2 and the side plate 12. When the half-roof prism 3 is fixed, glue is injected into two of the glue injection holes 123 to fill the gap between the half-roof prism 3 and the side plate 12. Figure 2The glue is injected into the glue injection holes 123 on the right side of the middle, and the glue can bond the ridge prism 2 and the side plate 12 together. When the half-ridge prism 3 is fixed, the glue is injected into the other two glue injection holes 123, and the glue can bond the half-ridge prism 3 and the side plate 12 together. After the glue between the ridge prism 2 and the side plate 12 and the glue between the half-ridge prism 3 and the side plate 12 solidifies, the bolts in the positioning threaded holes 122 are removed, and the fixing of the ridge prism 2 and the half-ridge prism 3 is very simple.

[0063] In the embodiment, three glue injection holes 123 are formed on each of the two side plates 12. When bonding the ridge prism 2, the glue can be injected into the two glue injection holes 123 on the two side plates 12 respectively to bond the ridge prism 2 and the two side plates 12 together to ensure the stability of the bonding and fixing of the ridge prism 2. When bonding the half-ridge prism 3, the glue can be injected into the four glue injection holes 123 on the two side plates 12 respectively to bond the half-ridge prism 3 and the two side plates 12 together to ensure the stability of the bonding and fixing of the half-ridge prism 3. When bonding the ridge prism 2, the glue can also be injected into only one glue injection hole 123 on one side plate 12 to bond the ridge prism 2 and the one side plate 12 together. When bonding the half-ridge prism 3, the glue can also be injected into only two glue injection holes 123 on one side plate 12 respectively to bond the half-ridge prism 3 and the one side plate 12 together.

[0064] Referring to Figures 1 to 9 The prism structure of the present application has the functions of forming a positive image and shortening the optical path of the optical system through the first light hole 111 on the base 11 of the prism frame 1, the ridge prism 2, the second light hole 41 on the floating partition plate 4, and the half-ridge prism 3. When assembling the prism structure, the circular end plate 13 is first installed in the two accommodating grooves 124 of the two side plates 12 as a positioning tool ( Figure 4 and Figure 5As shown in the drawing, first, the floating partition plate 4 is installed between the two side plates 12, two fixing screws 5 are respectively screwed into the two threaded holes 43 on the floating partition plate 4 through the through holes 121 on the two side plates 12, and the floating partition plate 4 can be freely rotated between the two side plates 12. At this time, the ridge prism 2 is assembled first, the ridge prism 2 is installed between the two side plates 12, the ridge prism 2 is pushed so that the first side surface 21 of the ridge prism 2 is attached to the base 11, and the second side surface 22 of the ridge prism 2 is attached to one side of the floating partition plate 4, and the ridge prism 2 is assembled in place. Next, the half-ridge prism 3 is assembled, the half-ridge prism 3 is installed between the two side plates 12, the half-ridge prism 3 is pushed so that the third side surface 31 of the half-ridge prism 3 is attached to the circular end plate 13 on the prism frame 1, and the fourth side surface 32 of the half-ridge prism 3 is attached to the other side of the floating partition plate 4, and the half-ridge prism 3 is assembled in place. Then, a bolt is screwed into one of the positioning threaded holes 122 on the side plate 12 with a certain tightening force, the end of the bolt abuts against the ridge prism 2 to pre-fix the ridge prism 2, and another bolt is screwed into the other positioning threaded hole 122 on the side plate 12 with a certain tightening force, the end of the bolt abuts against the half-ridge prism 3 to pre-fix the half-ridge prism 3. When the ridge prism 2 is fixed, glue is injected into one of the glue injection holes 123, and the glue bonds the ridge prism 2 and the side plate 12 together. When the half-ridge prism 3 is fixed, glue is injected into the other two glue injection holes 123, and the glue bonds the half-ridge prism 3 and the side plate 12 together. After the glue between the ridge prism 2 and the side plate 12 and the glue between the half-ridge prism 3 and the side plate 12 solidifies, the bolts in the positioning threaded holes 122 and the circular end plate 13 installed on the prism frame 1 are removed, and the fixing of the ridge prism 2 and the half-ridge prism 3 is very simple.In the assembly process, since the floating partition plate 4 can rotate at will between the two side plates 12, only the ridge prism 2 needs to be pushed into place during assembly, and the floating partition plate 4 will automatically return to the state of being attached to the ridge prism 2, thereby avoiding assembly errors. When the prism frame 1 and the floating partition plate 4 are processed, the threaded holes 43 on the floating partition plate 4 are directly processed after the prism frame 1 and the floating partition plate 4 are formed by turning and milling, as long as the coaxiality of the two threaded holes 43 is ensured, and the error caused by the deviation of the clamping hole during secondary clamping and the deviation of the positioning of the floating partition plate 4 is avoided. As long as the axis of the threaded hole 43 on the floating partition plate 4 adapted to the fixed screw 5 intersects with the axis of the first light hole 111 on the base 11 when the floating partition plate 4 is installed between the two side plates 12 through the fixed screw 5, the ridge prism 2 and the half-ridge prism 3 can be installed in place, thereby solving the problem of poor optical parameters caused by the machining error of the parts or the assembly error of the prisms in the traditional way, reducing the machining precision requirement and assembly difficulty of the parts, and improving the machining efficiency of the prism frame and the assembly efficiency of the prisms and the prism frame.

[0065] Referring to Figure 11 An assembly method of a prism structure, comprising the following steps:

[0066] S101: After the fixed screw 5 is inserted through the through hole 121 on the side plate 12, it is placed in the side of the floating partition plate 4, the floating partition plate 4 is installed between the two side plates 12, and the floating partition plate 4 can rotate between the two side plates 12.

[0067] S102: The ridge prism 2 is installed between the two side plates 12, the ridge prism 2 is pushed so that the first side surface 21 of the ridge prism 2 is attached to the base 11, and the second side surface 22 of the ridge prism 2 is attached to one side of the floating partition plate 4, and the ridge prism 2 is assembled in place.

[0068] S103: The half-ridge prism 3 is installed between the two side plates 12, the half-ridge prism 3 is pushed so that the third side surface 31 of the half-ridge prism 3 is attached to the prism frame 1, and the fourth side surface 32 of the half-ridge prism 3 is attached to the other side of the floating partition plate 4, and the half-ridge prism 3 is assembled in place.

[0069] S104: The ridge prism 2 and the half-ridge prism 3 are fixed.

[0070] S105: The ridge prism 2 and the side plate 12 are bonded together, and the half-ridge prism 3 and the side plate 12 are bonded together.

[0071] The assembling method of the prism structure, in the assembling process, since the floating partition plate 4 can be randomly rotated between the two side plates 12 of the prism frame 1 with the fixed screws 5 as the axis, only the ridge prism 2 needs to be pushed to the position first in the assembling process, and then the floating partition plate 4 will be automatically returned to the state of being attached to the ridge prism 2, so as to avoid the assembling error, the assembling method of the present application solves the problem of poor optical parameters caused by the machining error of the parts or the assembling error of the prism in the traditional way, reduces the machining precision requirement of the parts and the assembling difficulty, and thus improves the machining efficiency of the prism frame 1 and the assembling efficiency of the prism and the prism frame 1.

[0072] Referring to Figure 10 and Figure 12 , an assembling method of a prism structure, comprising the following steps:

[0073] S201: After the fixed screws 5 are inserted through the through holes 121 on the side plates 12 and are screwed into the side of the floating partition plate 4, the floating partition plate 4 is installed between the two side plates 12, and the floating partition plate 4 can be rotated between the two side plates 12;

[0074] Referring to Figure 10 , the number of the fixed screws 5 is two, the two side plates 12 are both formed with the coaxial through holes 121, the upper end face and the lower end face of the floating partition plate 4 are both formed with the threaded holes 43, the two threaded holes 43 are coaxially arranged, the two fixed screws 5 are respectively inserted through the through holes 121 on the two side plates 12 and are screwed into the two threaded holes 43 on the floating partition plate 4, the axes of the two fixed screws 5 intersect with the axis of the first light hole 111 on the base 11, so as to ensure that, after the floating partition plate 4 and the ridge prism 2 and the half-ridge prism 3 are installed in place, the floating partition plate 4 has an angle of 48° with the end face of the half-ridge prism 3 (α=48° in the formula), so as to meet the requirements of the normal image and the short light path of the optical system, and the floating partition plate 4 can be randomly rotated between the two side plates 12 with the two fixed screws 5 as the axis. Figure 5

[0075] S202: The ridge prism 2 is installed between the two side plates 12, the ridge prism 2 is pushed so that the first side face 21 of the ridge prism 2 is attached to the base 11, and the second side face 22 of the ridge prism 2 is attached to one side of the floating partition plate 4, and the ridge prism 2 is assembled in place.

[0076] S203: The half-ridge prism 3 is installed between the two side plates 12, the half-ridge prism 3 is pushed so that the third side face 31 of the half-ridge prism 3 is attached to the prism frame 1, and the fourth side face 32 of the half-ridge prism 3 is attached to the other side of the floating partition plate 4, and the half-ridge prism 3 is assembled in place.

[0077] ​Before installing the half-roof prism 3, it is necessary to install the fixed circular end plate 13 in the two accommodating grooves 124 of the two side plates 12 Figure 4 and Figure 5 As shown in the figure, the third side 31 of the half-roof prism 3 is attached to the circular end plate 13 on the prism frame 1, and the fourth side 32 of the half-roof prism 3 is attached to the other side of the floating partition plate 4. Figure 5

[0078] S204: One bolt 6 is screwed into one positioning threaded hole 122, and when the bolt 6 is screwed, the end of the bolt 6 is pressed against the ridge prism 2 to pre-fix the ridge prism 2,

[0079] Another bolt 6 is screwed into another positioning threaded hole 122, and when the bolt 6 is screwed, the end of the bolt 6 is pressed against the half-roof prism 3 to pre-fix the half-roof prism 3.

[0080] S205: Glue is injected into the glue injection hole 123, and the ridge prism 2 and the side plate 12 are bonded together, and the half-roof prism 3 and the side plate 12 are bonded together.

[0081] S206: After the glue between the ridge prism 2 and the side plate 12 and the glue between the half-roof prism 3 and the side plate 12 solidifies, the bolt 6 in the positioning threaded hole 122 is removed;

[0082] After the glue between the ridge prism 2 and the side plate 12 and the glue between the half-roof prism 3 and the side plate 12 solidifies, the circular end plate 13 installed on the prism frame 1 is removed, and at this time the assembly of the ridge prism 2 and the half-roof prism 3 is completed.

[0083] The assembly method of the prism structure of the present application, in the assembly process, because the floating partition plate 4 can be randomly rotated between the two side plates 12 with the two fixed screws 5 as the axis, only need to push the ridge prism 2 to the right position during assembly, the floating partition plate 4 will automatically return to the state of being attached to the ridge prism 2, thereby avoiding assembly errors, when machining the prism frame 1 and the floating partition plate 4, after turning and milling the prism frame 1 and the floating partition plate 4, directly machining the two threaded holes 43 on the floating partition plate 4 which are adapted to the two fixed screws 5, as long as the coaxiality of the two threaded holes 43 is ensured, avoiding the error caused by the deviation of the second clamping hole and the positioning deviation of the floating partition plate 4, the assembly method of the present application solves the problem of poor optical parameters caused by the machining error of the parts or the assembly error of the prism in the traditional way, reduces the machining precision requirement and assembly difficulty of the parts, thereby improving the machining efficiency of the prism frame 1 and the assembly efficiency of the prism and the prism frame 1.

[0084] ​The above merely describes some embodiments of the present application, which are intended to illustrate the technical means of the present application, and are not intended to limit the technical scope of the present application. Any modification of the present application made by those skilled in the art based on the prior art knowledge falls within the protection scope of the present application.

Claims

1. A prism structure, comprising a prism frame, a roof prism, and a half-roof prism, wherein the roof prism and the half-roof prism are both disposed on the prism frame, characterized in that, It also includes a floating partition and fixing screws. The prism frame includes a base and two parallel side plates. The ends of the side plates are located on the end faces of the base. The base has a first light hole. The floating partition is located between the two side plates. The floating partition has a second light hole. The side plates have through holes. The fixing screw passes through the through holes in the side plates and is screwed into the side of the floating partition. The floating partition can rotate between the two side plates with the fixing screw as the axis. The ridge prism and the half-roof prism are both located between the two side plates and are located on both sides of the floating partition. The first side of the ridge prism is attached to the base. The second side of the ridge prism is attached to the floating partition. The third side of the half-roof prism is attached to the prism frame. The fourth side of the half-roof prism is attached to the floating partition.

2. The prism structure according to claim 1, characterized in that, The number of fixing screws is two, and there are coaxial through holes on both side plates. The two fixing screws pass through the through holes on the two side plates and are screwed into the side of the floating partition.

3. The prism structure according to claim 1, characterized in that, The axis of the fixing screw intersects the axis of the first optical hole.

4. The prism structure according to claim 1, characterized in that, The base has a limiting groove on the end face near the floating partition, and one end of the floating partition has an inclined surface. The end of the floating partition with the inclined surface is accommodated in the limiting groove, and the floating partition is arranged obliquely between the two side plates.

5. The prism structure according to claim 1, characterized in that, The side plate is provided with two positioning threaded holes. When a bolt is screwed into one of the positioning threaded holes, the end of the bolt can pre-fix the ridge prism; when a bolt is screwed into another positioning threaded hole, the end of the bolt can pre-fix the half-roof prism.

6. The prism structure according to claim 5, characterized in that, The side plate is provided with multiple glue injection holes. When glue is injected into at least one injection hole, the ridge prism can be bonded to the side panel, and when glue is injected into at least one injection hole, the half-roof prism can be bonded to the side panel.

7. A method for assembling a prism structure according to any one of claims 1 to 6, characterized in that, Includes the following steps: (a) After passing the fixing screw through the through hole on the side plate, screw it into the side of the floating partition, install the floating partition between the two side plates, and the floating partition can rotate between the two side plates; (b) Install the ridge prism between the two side panels, push the ridge prism so that the first side of the ridge prism is attached to the base and the second side of the ridge prism is attached to one side of the floating partition. The ridge prism is now in place. (c) Install the half-roof prism between the two side plates, push the half-roof prism so that the third side of the half-roof prism fits against the prism frame, and the fourth side of the half-roof prism fits against the other side of the floating partition. The half-roof prism is now in place. (d) Secure the ridge prism and half-roof prism; (e) Glue the ridge prism to the side panel and the half-roof prism to the side panel.

8. A method for assembling a prism structure according to any one of claims 1 to 6, characterized in that, Includes the following steps: (a) After passing the fixing screw through the through hole on the side plate, screw it into the side of the floating partition, install the floating partition between the two side plates, and the floating partition can rotate between the two side plates; (b) Install the ridge prism between the two side panels, push the ridge prism so that the first side of the ridge prism is attached to the base and the second side of the ridge prism is attached to one side of the floating partition. The ridge prism is now in place. (c) Install the half-roof prism between the two side plates, push the half-roof prism so that the third side of the half-roof prism fits against the prism frame, and the fourth side of the half-roof prism fits against the other side of the floating partition. The half-roof prism is now in place. (d) Use a bolt screwed into a positioning threaded hole, with the end of the bolt pressing against the ridge prism to pre-fix the ridge prism. Use another bolt to screw into another positioning threaded hole. When screwing in the bolt, the end of the bolt presses against the half-roof prism to pre-fix the half-roof prism. (e) Inject glue into the glue injection holes to bond the ridge prism to the side panel and the half-roof prism to the side panel; (f) After the glue between the ridge prism and the side panel, and between the half prism and the side panel have solidified, remove the bolts from the positioning threaded holes.

9. The assembly method according to claim 8, characterized in that, In step (a), there are two fixing screws. Both side plates have through holes on the same axis. After passing the two fixing screws through the through holes on the two side plates, they are screwed into the side of the floating partition. The floating partition can rotate between the two side plates with the fixing screws as the axis.

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